Mastering Angular, Part 7: Custom Form Validation

As we go more in-depth in our Mastering Angular series, learn how Angular (2 or later) includes built-in support for basic input validation. Plus, find out how you can write custom validator functions to validate anything you want, any way you want, and see how to apply them using directives.

Get the details on validator functions, apply validators with a directive, create custom asynchronous validators, and validate a model group. See lots of practical demos, like how to create a custom telephone validator function, use a directive to apply the telephone validator, apply a book ID validator with a directive, and geocode an address.

1 | Mastering Angular, Part 7: Custom Form Validation
Learn how to write custom validators and apply them using directives.

Learn
Learn how to write custom validators for Angular and apply them using directives.